Turn tokens into whole attempts
Divide your budget by the cost of one attempt, then round down. With 4,500 tokens and a cost of 400, you can afford 11 attempts. Those attempts cost 4,400 tokens, leaving 100. A fractional result such as 11.25 does not buy a twelfth item.
attempts = floor(budget / cost)leftover = budget − attempts × cost
Compare the same assumptions
| Tokens | Attempts | Left over | At least one success |
|---|---|---|---|
| 300 | 0 | 300 | 0% |
| 1,200 | 3 | 0 | 27.10% |
| 4,000 | 10 | 0 | 65.13% |
| 4,500 | 11 | 100 | 68.62% |
| 8,800 | 22 | 0 | 90.15% |
The final column uses 1 − (1 − p)n. Rolls must be independent with an unchanged success rate. A pity mechanic or changing rate requires a different model.
A 90% target still leaves room for failure
At 10% per independent attempt, 22 attempts cross a 90% target. The chance of no successes is still about 9.85%. This is a comparison for a budget you already have, not a reason to buy more currency.
What this budget leaves out
- Items already in your inventory are not counted. Add their attempts separately if their odds match.
- Discounts, free rewards and changing prices need their own inputs.
- The full budget assumes you use every planned attempt. Stopping after a success may cost less.
- It does not estimate pet income, resale value or whether a purchase is worth making.
Use your current numbers
Open the calculator, choose “My token budget”, and enter your tokens, the current item cost and its displayed chance. If an attempt costs zero, there is no finite budget-based attempt count; use the number-of-attempts mode instead.
Calculate my budget →For item targeting and timing, see the Mutation Consumable guide. Game facts and the probability model are separate: the arithmetic cannot verify a game mechanic.